Improvement in harvester cutter-bar connections



CULP 3;. KEENEYY Harvester Cutter Ba r Connection.

Patented Aug. 25, 1863 UNITED STATES PATENT OFFICE.

GEO. W. D. GULF, OF ALLENSVILLE, AND J. KEENEYQOF FLORENGE,

INDIANA.

IMPROVEMENT IN HARVESTER CUTTER-BAR CONNECTIONS.

Specification forming part of Letters Patent No. 39.633, dated August25, 1863.

To all whom it may concern:

Be it known that we, GEORGE W. D. CULP, of Allensville,in the countyofSwitzerland and State of Indiana, and WILLIAM J. KEENEY, of Florence, inthe same county and State, have invented a new and improved mode ofmounting and communicating motion to the cutting apparatus ofharvesting-machines; and we do hereby declare the following to be a fulland exact description of the same, reference being had to theaccompanying drawings, making part of this specification, in whichFigure l is a top view of the cutter and connecting-rod of aharvesting-machine illustrating our invention. Fig. 2 is a front view ofthe same. Fig. 3 is a horizontal section at aa2, Fig.2. Fig. 4 is an endview of the heel of the pitman and cutter.

Similar letters of reference indicate corresponding parts in the severalviews.

Our said invention relates to certain improved modes of connecting thepitman of a harvesting-machine to its cutter-bar or crankwheel, or both,the principal objects being to compensate forthe wear of the journals,permit a free rocking motion of the cutter-bar, reduce the friction uponthe bearings, and render the motion smooth and uniform.

In order that others skilled in the art to which our inventionappertains may be enabled to fully understand and use the same, we willproceed to describe its construction and operation.

A may represent a cutter-bar of any suitable form, constructed with alug, a, projecting upward and perforated to form a socket for theattachment of a pitman, B. The said pitman is curved at its outer endand provided with a conical projection, b, which, fitting in the sockett, constitutes the journal by which the pitman is connected to thecutter-bar. The said conical journal b is confined within the socket onby a friction-plate, 0, bearing against the back of the socket andsecured to the pitinan by a screw-bolt and nut, D d, and pin 0. Theinner end of the pitman is forked, as shown in Fig. 2, and the two forksconnected by a cross-head, E.

F represents a box pivoted within theforks of the pit-man, itsrespective ends being pivoted upon a projecting point, I), and centerscrew, G, the latter passing through the crosshead E.

H represents a conical or conoidal journal or point fitting a socket inthe box F and con fined therein by a plate, I, bearing against ashoulder or collar, h, on the back of the comcal journal H, and securedto the .box by a box F affords free rocking play to the cutter to permitit to conform to the motion of the finger-beam.

We are aware that other modes, different from that above described, havebefore been devised for attaching the ends of a pitman bycone-and-socket joints. The use of two cones entering opposite sides ofthe socket (which we well know'to be an old device) defeats the primaryobject of our invention, which is to provide an unlimited adjustment tocompensate for the wear of the parts. To this end it is essential thatthe socket shall be occupied by a single cone confined by an adjustabledevice having no counter projection within the socket.

Having thus described our inve:ntion,,,what we claim as new therein, anddesire to secure by Letters Patent, is-

1. Connecting a pitrnan, B, to a cutter-bar, A, by means of a singleconical or conoidal journal, b, passing through a corresponding socket,a, in the heel of the cutter-bar, and confined by an adjustable plate,G, as herein shown and described, so as to employ the entire strength ofthe projection on the heel of the bar and admit of tightening up thecone or journal for the whole extent of its length.

2. Constructing the said point, cone, or 00- noidal journal with ashoulder or collar, h, to constitutega bearing for the confining-plateI,

substantially as herein described.

3. Connecting the pitman to the crank or fly wheel by means of a rockingbox, substan- Witnesses H. B. KEENEY, DELILA KEENEY.

